Scientists have retired Najin, a thirty-two-year-old northern white rhino, from a breeding program designed to save the species. Najin is one of two remaining northern white rhinos.
- Neither Najin, nor her daughter Fatu, the other remaining white rhino, is capable of carrying a rhino calf to term.
- The decision to stop harvesting Najin's eggs was based on an "ethical risk assessment" considering her age and other issues.
- The last male northern white rhino died in 2018, but its sperm was collected and preserved.
- Twelve fertilized white rhino embryos have been created so far, and scientists hope to place them into surrogate mothers from the more populous southern white rhino species.
- Northern white rhinos have been brought to the brink of extinction by poaching and habitat loss.